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Spark plug thread reach

  
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Spark plug thread reach

 
zapper71 zapper71
New User | Posts: 4 | Joined: 08/13
Posted: 08/22/13
09:43 AM

What is the sparkplug thread length for sm blk casting 462, or 492 double humpers. Is it .460 or .375 or ???  

waynep712222 waynep712222
Enthusiast | Posts: 251 | Joined: 03/13
Posted: 08/22/13
02:14 PM

Ac delco R45s 0.370" thread length  

74CamaroLS1 74CamaroLS1
New User | Posts: 11 | Joined: 08/13
Posted: 08/22/13
02:28 PM

http://www.chevytalk.org/fusionbb/showtopic.php?tid/127753/

Looks like it's .375  

zapper71 zapper71
New User | Posts: 4 | Joined: 08/13
Posted: 08/22/13
03:52 PM

Thanks guys! Now if I can just find a 3/8th" reach gasket plug that's medium cold for E85 alcohol I'll be in business.  

zapper71 zapper71
New User | Posts: 4 | Joined: 08/13
Posted: 08/22/13
03:54 PM

Smirk Thanks guys! Now if I can just find a 3/8th" reach gasket plug that's medium cold for E85 alcohol I'll be in business.  

zapper71 zapper71
New User | Posts: 4 | Joined: 08/13
Posted: 08/23/13
04:34 AM

Never mind, Found a couple on Jegs or Summit! Autolite AR73(cool), AR72(cooler).